Combined eolder and guide eor sewing-machines



A. H. DE VOE. COMBINED FOLDER AND,GUIDE FOR SEWING MACHINES.

APPLICATION :FILED APR. 15, I916- Patented Oct. 7,1919.

2 SHEETS-SHEET I.

' ATTORNEY 'A. H. DE VOE.

COMBINED FOLDER AND GUIDE FOR SEWING MACHINES APPLICATION FILE'D APR.15. I9l6.

: 1,317,865. \V V Patented 001;. 7,1919.

2 SHEETS-SHEET 2.

WITNESSES: w m/mvro/e Z 65 awerwmfi 2 a I B) 1W 4 Q 1 A'rfo/rA/Er F sraras raranr enric ALBERT H. DE 'VOE, 0F WESTFIELD, NEW JERSEY, ASSIGNOR TO THE SINGER MANUFAC- TURIKG COMPANY, A CORPORATION OF NEW J EBSEY.

coivrsmnn FOLDER. AND GUIDE son SEWING-MACHINES.

To allwhom it may 00mm;- Be it known'that I, ALBERT H. DE Von, a

citizen of the United States, residing at Vestfield, in the county of Union and Stateof- New Jersey, have invented certain new and useful Improvements in Combined Folders and. Guides for Sewing-Machines, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to improvements in combined folders and guides for sewing machines and has for its object to improve the folding and guiding mechanism of U. S.

Patent No. 684,990, of October 22, 1901, to

.ure 1 IS a view in front side elevation of a Singer sewing machine equipped with the present invention.- Figs. 2 and 3 are plan;

and rear side elevations, respectively, of Fig.

1. Figs. 4, 5 and 6 views 111 perspective of the edge-folder, band-guide and tapeuide, respectively. Fig. 7 is a detail later to e referred to. Fig. 8 is a view in perspective of a portion of the sewing machine cloth and throat or needle-plate, illustrating the manner in which they for the band-guide. Fig. 9' is a view showing the tape as an inner ply with the bodyfabric and tape folded back to better illus- I trate the manner of inserting the tape. Fig.

1.0 is a View similar to Fig. 9 showing the tape as an inner ply and the several plies,

secured together as in the finished product.

The present invention is herein shown and will be described as applied to a Singer twoneedle. sewing machine, but as the application of the invention is not limitedto any particular variety of sewing machine, only such reference will bemade to the well known parts of the latter as is thought essential for an understanding of its application.

Referring to the figures,-1 represents the sewing machine bed or base from which rises the standard 2 carrying the bracket-arm 3 Specification of Letters Patent.

are cut away to form a seat Patented Oct. '7, 1919.

Application filed April 15, 1916. Serial N 0. 91,296.

and 4 the cloth-plate. As is common to machines of the present variety the'needle-bar 5 is actuated from a commonly employed rock-shaft (not shown) journaled in suitable bearings formed in the bracket arm and operativelyconnected by a suitable crank connection (not shown) with the lower mainor driving-shaft 6 provided with the handor band-wheel 7, the needles, as 8, cooperating with suitable loopers- (not shown) in a manner common to machines for effecting two thread elastic stitch seams. 9 denotes the feed-dog of one form of commonly employed four-motion feeding-mechanism, the details of which are unimportant to the present invention, 10 the throator needle-plate secured upon the cloth-plate by screws, as 11, the depressed surface 12 of said throat-plate in connection with the depressed surface'l3 of the cloth-plate forming a seat for the band-guide.

Referring now to the folding and guiding elements and the means for effecting their cotiperation to properly present the fabrics to the action of the cloth-feeding and stitchfor'ming mechanism, 14 denotes the bandguide bracket-plate secured upon the cloth- -plate by screws,-as 15, and to the underside of said bracket isadjustably secured by screws, as 16, a band-guide bracket 16' carrying the band-guide 17 seated upon the depressed surfaces 12, 13 and provided with the usual folding scrolls, as 18, and a tape as 23, the scroll plate Ql provided with the edge folding scroll 25, and to the standard '21 is adjustabl y secured by screw 26 a tape tension releasing bracket 27 provided with tension releasing finger or element 28.

29 represents the tape-guide bracket pivoted by screw 30 passing through an opening 31 formed inthe latter and through anelongated slot 32 formed in the plate 14 and like slot (not shown) formed in the bracket 16 and threaded in theopening 33 formed in the lug 3i of the tape-guide shifting link 35, the opposite end of the latter .being connected by a crank-21111136 with a rock-shaft 37 journaled iii-suitable bearings formed in the flange 38 of the cloth-plate and bearing 39 (shown in dotted lines only) suitably seopposition to the resiliency of the springs,

48 and 48".when the rod 42 is actuated through the manual manipulation ofv a suit able footor knee-treadle (not shown) connected with the treadle-rod 49', which latter is connected with the rod 42 by the collar 50 suitably secured to the'latter, the spring 48 acting upon the upper end of said presse'r-bar in a manner common to sewing machines generally.

51 represents a tape-guide carried by the tape-guide bracket 29 which, at its forward end, is provided with a V-shaped notch 52 through which, by the employmentof a suitable'instrulnent as pliers, the delivery end of the guide may be slightly widened or narrowed to meet slight variations in the width of the tape, said bracket being provided with an extended portion or arm 53 having a turned downportion or lip 54 acted on by aspring 55, suitably-secured to the flange 38, in opposition to the spring-catch 56 sultably secured upon the clothplate 4. 57 de notes a tape controller spring the front end of 'which,in practice, bears down upon the tape 58, its opposite end being provided with an angular portion 59 having an opening 60 and flange 61, a tension stud 61' secured in the bracket 29 and provided at its upper end with a tension-nut 62 passing through said opening, and onto said' stud is mounted a tension-spring 63 which, through the adjustment of the nut 62, effects the desired tension on the tape, the curved portion or finger piece 64 making convenient the raising of the tension-spring'off the tape and moving it to substantially the position shown in clotted lines Fig. 6 .to make more convenient the threading of the tape into the guide.

In practice the free edge of the fabric 65 is positioned in the'scroll guide 25 which forms the fold 66, the tape 58 herein representing an elastic tape, is threaded into the tape-guide 51 by first passing it from the supply through the loop 19 fast on the fold guide, followed by passing the end of the fabric'which is to form the band 67 from the supply through the opening 68 and into the folding scrolls 18, each of said fabrics being passed through their respective guides a distance sufficient to meet the action of the feed-dog when the machine is put into operation.

terrace To better accommodate the threading of the material comprising the band 67, the tape-guide 51 is first swung on the pivot screw 30 to a position corresponding substantially to the dotted line position of the .tape tension spring 57, the tape-guide being held against swinging movements by the spring 55acting to hold the tape-guide eX- tension 53 into contact with the vertical wall 09 of the spring. 56, which latter is capable of being depressed to release said tension.

Having set forth the details in construction, the following coiiperation of the parts will be readily understood.

Supposing the fabrics to have been positioned in their respective guides and in position to be acted on by the stitch forming and cloth feeding mechanism, as pointedout, the operator through a suitable treadle.

(usually foot-treadle) puts the machine into operation and at the same time by themanipulation of a second treadle (usually kneetreadle) moves, through the connections 35, 36, 37, 40, 42, 49 and 50, the tape-guide 51 to the left a. distance suflicient to'bring the front end of the resser-lifting lever 43 in engagement with the lug 45 carried; by the presscr-bar 46, which adjustment posltions the tape 58 to receive the line of stitching 70 for a distance suihcient to insure it against displacement, such adp stment of the tapeguide causing the tens on releasing element 28 to engage the under surface of the oval.

portion 71 of the tape-tension spring 57 and move its free end out of engagement with the tape. After the desired length of tape has been secured the operator permits the springs 48 and 48 to return the tapeguide to its normal position or position to I direct the tape between the lines of stitching, as shown'in Fig. 9, until nearly the completion of the stitching operation when like adjustments are given the'tape-guide and its spring to again secure the tape as in the first instance.

It is to be understood that when, forany purpe 2, it is desired to lift the cloth-presser the operator gives to the tape-guide adjusting treadle sutlicient movement to cause the free end of the presser-lifting lever 48 to engage and raise the presser-bar lug 45 and that the springs 55and56 act as guides to direct the movements of the tape-guide in a line transverse to the lines of scam formation.

Having thus set forth the nature of the invention, what I claim herein is 1. In a sewing machine for guiding and folding superposed plies of fabric, the combination with a cloth-presser bar and means for raising the latter, a scrollguide, a bandguide and an adjustably securedtape-guide, of means for effecting said adjustments including a tape-guide shifting link operatively connected with the means for raising s aid cloth-press ei' ban, to giteto saidstepe fi guide "movements in directions transversely of the lines of seam-formation."

ZIIna combined folder and guide I vided vizith: atape-tensioning' spring adjust ab1e with and independently o said tape guide, and means for effecting snid adjust Inentsinclnding-n mannally controlled shift- :in-g'link-pivotaHy connected at oneendwith said tapeg'eide to give to thelatter movements indli' ections transverse to the lines of seam. formation.

' sewing. machiiiesfthe combination (5i 2; 'sta tienary scroll'guide,-=2;istationary"loafido n se i-ng mechines, the combination oi a; star" 'tiona yi isci-oll --gu ide,;--a, stationary bend .v guide, an adjnstably secured tape-guide 1101 ha ter tape and means for effecting said adjustnents including a manually controlled shift ing link pivotally connected at oneend 'with said tepe-guide to give to thela'tter movements in directions transverse to; the lines ofsezun formation, and means including I a tape-tension spring releasing nel'ement' brought into eflective relationship with said- 3 I tension spring by xthelateral movements of said. tape-guide In testimony whereof name to-this 'sp'ecification.- 7

1 hate signed 4 

